I'm thinking of getting a gas fire installed but I don't have a flue or a
chimney. It will be against an outside wall and the gas pipe is located
behind the skirting where I would like the fireplace.
I understand I can get a balanced flue, power flue or flueless gas fire. I
was just wondering if anyone had one of these types and what they thought of
The flueless types are quite low output (IIRC, 1.5kW for a habitable room)
and put water vapour back into the room (but are practically 100% efficient)
so are ideal for use in conjunction with central heating (which provides
most of the heat you need but tends to dry out the air).
If you need to seriously heat the room you will need a flued type.
No experience of them though - sorry
A gas fire doesn't *have* to produce carbon monoxide. In fact if it does,
then it's not burning efficiently because the hydrocarbons in the fuel gas
are being incompletely burnt (oxidised) into carbon *mon*oxide instead of
completely oxidised into carbon *di*oxide.
The yellow CO producing flame looks a lot better than the 100% CO2 producing
efficient blue flame though.
For those who can remember back to school, this was the opening and closing
of the air hole on the bunsen burner... ;-)
On Fri, 21 Nov 2003 10:02:18 +0000, Lobster wrote:
Also flueless fires require _E N O U R M O U S_ fixed permenant purpose
provided ventilation (minimum 100cm2) and more for larger units.
To the OP, I would say the balanced type would be the most sensible unless
you need the humidity and the cost of a flueless unit.
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at www.diyfaq.org.uk
We got rid of our balanced flue fire as it was old, ugly and kept cutting
out. While it was working properly it produced more than enough heat for our
19' x 18' room, so much so that we usually had it set down at minimum once
the room had warmed up. Disadvantages are obviously cutting the hole in the
wall for the flue, regulations as to where you can put flues, the cost of
the fire (much more than a standard, non-balanced flue gas fire) and the
cost of installation. Flueless sound like an ideal proposition but you have
to remember they put a lot of moisture back into the air.
In the end we went for an electric fire. Doing the calculations on our
average usage, the relative cost of the energy sources and the cost of the
fires and installation, it would have taken about 10 years for the gas fire
to have started to save us money over the electric.
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